Books have been set forth on this item, and the controversy and face-offs about where the "hot" slot machine games are installed in a casino are still passionate – sixty years after slot machine games were first placed in casinos.
The quintessential rule is that the better slot games were put just inside the entrance of the casino; so that folks passing by would see actual jackpot winners and be attracted to come inside and play. Our viewpoint is that this is no longer true.
The majority of the big name casinos nowadays are humongous complexes and it’s no longer possible to see inside from the sidewalk, so there’s no longer a reason to put the ‘loose’ slot games in close proximity to any of the doors.
An additional standard rule is that loose slot machine games are placed on the major aisles in the casinos, again so that more folks could see winning jackpots and be galvanized to play. Notably though, we find that this also is no longer a universal rule.
What casinos found over the years is that people walking down the busy aisles were frequently on the way to somewhere else. If they played slots at all, they would simply put in their loose change because they happened to be walking by. Win or lose, they would very often not stop to keep playing. And the last thing a casino wants is for someone to win a jackpot by playing only a few coins and then not stay to put it all back in!
Today, casinos are constantly changing their perspective about where to place the loose slot machines.